What is the reactant(s) of the reaction below?
MgCO3(s) → MgO(s) + CO2(g)
O
A. Magnesium oxide and carbonate
O
B. Magnesium carbonate
O
O
C. Magnesium and carbon dioxide
D. Magnesium oxide

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors